#include <bits/stdc++.h>
using namespace std;
int n, ans = 1;
int r[100005];

int main()
{
	freopen("duel.in", "r", stdin);
	freopen("duel.out", "w", stdout);
	
	cin >> n;
	for (int i = 1; i <= n; i++)
		cin >> r[i];
	int sum = 1;
	sort(r + 1, r + n + 1);
	for (int i = 2; i <= n; i++)
		if (r[i] == r[i - 1])
			sum++;
		else {
			ans = max(ans, sum);
			sum = 1;
		}
	ans = max(ans, sum);
	cout << ans << endl;
	
	fclose(stdin);
	fclose(stdout);
	
	return 0;
}
